Packing-ring.



W. NI. OLDENDORPH.

PACKING RING.

APPLICATION FILED JUNE 30| l9l3.

l,237,545 PamntedAug. 21,1917.

i 'i To all whom t may concern.'

1..- three-part resilient ring, each @FMF earn

WALTER OLDENDORPH, 0F` ST. LOUIS, MISSOURI, ASSIGNOB OF `ONE-I-.lAll1FTO WILFRED SPEAK, OF ST. LOUIS, MISSOURI. I

Pennine-nine.

pasaste.

Be it known that I, WaL'rER M. AOrman DoRPH, a citizen of the UnitedStates, and a resident of St. Louis, Missouri, have inventedcertain newand useful Improvements v in Packing-Rings, of which the following is aspecification.

The packing ring of my invention is a of its annular members being splittransversely to permit it to be sprung into place upon a piston head,and the gaps in the three members being held equidistant from each otherwhen the ring is positioned for use. The packing ring is adapted for usein any pump, engine or other mechanism wherein circular or oval pistonheads are employed, and the function of my invention is to provide acomposite ring whose members are severally readily sprung into operativeposition, and assembled together', within the packing-groove of a pistonhead.

In the accompanying drawing- Figure 1 is a fragmental view of a pistonhead having two packing grooves, in which grooves are packing ringsembodying my invention.

Fig. 2 is a plan View of the ring of my invention.

Fig. 8 is an elevation of said ring taken from the side indicated by thenumeral 3 and arrow-pointer in Fig. 2.

Fig. 4 is a diametric sectional view of the saine taken on the line 4-4of Fig. 2.

Fig. 5 is a sectional view through the body of the ring on the lineindicated by 5-5 in Fig. 2.

Fig. 6 is a similar view taken on the line 6 6 of Fig. 2.

As is well known to those skilled in the art to which my inventionrelates, piston heads A are usually provided with peripheral grooves a,approximately square in section, wherein various packinginstrumentalities are mounted, to guard against leakage of the steam,air, or other Huid used as the actuating power of the piston. I am awarethat split rings have been heretofore employed in this location, and myinvention resides in the structure illustrated, wherein two annularsplitrings, 1 and 2, L-shaped in cross-section, their inner ianges contactingwith each other, receive and-hold between their outer flanges the splitannulus 3, which is rectangular in section, and of such dipSpecilcatonof Letters Patent.

Application filed .T une 30, 1913. Serial No. 776,484

)Patented Ang.. 21, 1917.

mensions that, when seated in place upon the bands 1 and 2 it forms withthem a three-part packing ring having a peripheral face in substantialalinement with that of the piston-head.

is desirable to keep these points of severance equidistant, and topreserve the proper relative positions of the parts, and to that end Iemploy pins 4 and 5 to detachably secure the annular bands 1 and 2 tothe annulus 3, the pins passing through the members as shown in Figs. 5and 6, and being located at the points indicated by the lines 5-5 and G-on Fig. 2.

By these means the opening or transverse slot in each of the threemembers is opposite a solid part of another member, or other members,whereby leakage through the ring is prevented. The annular bands and theannulus each have an outer peripheral bearing `surface contacting withthe inner surface of the cylinder B, as shown in Fig. l; and each ofsaid three members, by reason of its construction, has more or lessoutwardly-directed resiliency at the terminals riphery, and consequentlyuniform wear upon the inner face of the cylinder.

Having thus described my invention, what I claim as new and desire tohave secured to me by the grant of Letters Patent, is

1. A packing ring comprising two split rings, each having an inturnedbottom ange, and a peripheral side iange projecting at a right anglefrom said bottom flange; and a. split annulus seated between said sideflanges and upon said bottom flanges; securing means for positively1preventing relative movement between the split rings and the annulus.

2. A packing ring comprising two split rings each 'having an inturnedbottom flange and a peripheral side flange projecting at -right anglesfrom the bottom Harige, a split annulus seated between said flanges andupon said bottom flanges, and locking pins passing through the splitrings and the annulus 'or preventing relative movement between saidrings andl annulus. v

3. A packing ring comprising a body portion formed of tvvo split ringsarranged side by side and having their inner peripheries formed withannular flanges, said flanges in contact with each other and coperatingwith the rings to form a groove of rectangular cross sectional shapeupon the outer surface of the body portion, and a split eX- pansiblering of the same cross sectional shape as said groove snugly ttingWithin said groove, the split portions of said rings 20 WALTER M.OLDENDORPH.

Witnesses:

WILFRED H. SPEAR, JAMES L. HOPKINS.

. Genies of this patent may be obtained for ve cents each, by addressingthe ,ommissioner of Patents,

` Washington, D., C,

